Lock-nut.



L. A. JENNINGS.

LOCK NUT APPLICATION FILED MAY 21, 1914.

Patented Mar. 16, 1915.

auoemto'o LUTHER A. JENEINGS, 0F BUBKESVELLE KENTIFCH.

oon-mm -'---v Specification of Letters Patent.

Patented Mar. 1c, 1915.

Application filed May 31, 1914, sex-M1170. 840,095.

To (1Z3 whom it may concern:

Be it known that I, LUTHER A. Jnnnrnes, a citizen of the United States, residing at Burkesvilie, in the county of Cumberiand and State of Kentucky, have invented new and useful Improvements in Lock Nuts, of which the following is a specification This invention relates to improvements in means for looking a nut and bolt to prevent their accidental. separation.

One of the objects of? the invention is to provide a lock comprising a. key which sholi be inserted through an opening in a nut to engage with the threads of the bolt, upon which the nut is screwed to removahly sustuin the nut and bolt connected.

A further object of the invention is to provide a bolt having a square end with e nut that is approximately centrally formed with three ungularly disposed passages that open into the bore of the nut, and to further provide a switch key which is adapted to he inserted through one of the passages to Contact with the wall of the said passage and one of the square faces at the end of the bore, and so retain the nutsnd bolt in locked position.

With the foregoing objects in View and othus which will appear as the details of the construction and the arrangement of parts are fully understood, the improvement resides in the construction, combination and arrangement of parts set forth in the fol lowing specification and falling within the scope of the appended claims.

The accompanying drawings illustrate a satisfactory reduction of theirnprovement to practice, and in the said drawings: Figure 1 is an elevationshowing the nut looked upon the squared end of the bolt, Fig. 2 is a sectional view on the line 2 2 of Fig 1, Fig. 3 is a similar sectional view with the key removed.

Referring now to the drawings in detail, the numeral 1 designates a bolt hnvin a threaded shank 2, the end of which being angular or square in cross section, as indicsted by the numeral 3, and the corners of the squared end are provided with teeth 4 which are continuutions of the main teeth upon the shank :2, or, in other Words, the end 3 is provided by filing or otherwise cutting into theteeth at the end of the nut to form a number of flat or square faces with the threads at the corners thereof tic e56 interrupted The numeral 5 designates a not which is provided with a number of sides or't'aces, and is preferably hexagonal or formed with, six angular sides or faces, and the said out 30 is adapted to be screwed upon the bolt} The nut adjacent one of its ends is formed with a plurality of ungularly disposed iiitersocting passages, preferably three in norm her, and indicated respectively. These passages each inter sect the threaded bore of the nut, and their arrangement such as to provide the in terior of the not with two oppositely dis posed flat or straight faces 9 End ii provided by the intersecting passages;

The numeral 11 designates a Wedge key which is provided for securin the nut upon the bolt. The key has, what %will term, its

inner face or the face thereof which is to engage with the bolt flat and 12. The outer or oppo site face of the key is round, as at 13, and what may be termed the outer walls of the i passages are likewise round. The key 11 is so constructed of some hardened material which, however, may be ductile under the hammer, so that the ends of the said key may be bent against the opposite faces or sides of the nut to sustain the key upon the 35 nut, if desired. o

By reference to Figs. 2 and? of the drawings it will be noted that the nut arranged upon the bolt has only one of its passages, 8, uninterrupted by the corners 4: of the w squared or angular end 3 of the nut, and it will be noted that the reduced end of the key can be forced through only the said passage 8 as an attempt to insert the said key in either of the remaining passages 6 or 7 96 would be prevented by the corners 4 of the bolt with which the end of thekey would Contact. As has been stated the end of the key may be bent over the face or side of the nutto sustain the said key against-eccl- 100 dental removal, but, the teeth 12 contacting with the squared face of the end of the nut and necessarily with the threaded corners of the said squared face will, under ordiadapted provided with teeth by the. numerals 8, 7 and 86 i nary conditions, efi'ectively sustain the key in locked position.

Having thus described the invention, What I claim is:

In a lock nut, in combination with a bolt, said bolt having a squared end, of a nut formed with three angularly disposed intersecting passages that open into' the bore of the nut, and a wedge key member in serted through one of the passages and co'n- 10 tacting with the wall thereof and one of the squared faces at the end of the bolt.

In testimony whereof I allix my signature in presence of two witnesses.

LUTHER A. JENNINGS. Witnesses:

J. \V. COLLINS, JOHN G. TALBOT. 

